It also depends on what you want to get away from. I don't disagree that Rust might technically be a better option for a new project, but it's still a fairly f

It also depends on what you want to get away from. I don't disagree that Rust might technically be a better option for a new project, but it's still a fairly fast moving language with an ecosystem that hasn't completely settled down. Many are increasingly turned off by the fast changing developer environments and ecosystems, and C provides you with a language and libraries that has already been around for decades and aren't likely to change much. There are also so many programming concepts and ideas in Rust, which are all fine and useful in their own right, but they are a distraction if you don't need them. Some might say that you could just not use them, but they sneak up on you in third party libraries, code snippets, examples and suggestions from others. Personally I find C a more cosy language, which is great for just enjoying programming for a bit.